The circuit board is cleaned by a circuit board cleaning machine. Generally, it is only suitable for large-scale circuit board cleaning, and the solution used for circuit board cleaning is generally acceptable. When cleaning the circuit board, be careful not to pile it up in disorder, but to place it in order, which will affect the cleaning effect. The solvent used is organic solvent or special cleaning agent for circuit board, and anhydrous alcohol (anhydrous alcohol) is not suitable, otherwise the circuit board will turn white, commonly known as white spots.
Cleaning method of circuit board: Ordinary cleaning mainly adopts a single cleaning tank, and the PCB to be cleaned is soaked in cleaning agent liquid for cleaning. The temperature of cleaning agent in ultrasonic cleaning machine is generally 35℃ ~ 85℃, and the cleaning time is 2 ~ 5 minutes. Liquid cleaning can be used for ordinary cleaning agents.